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Lexie: [narrating] Grief may be a thing we all have in common, but it looks different on everyone. Mark: It isn't just death we have to grieve. It's life. It's loss. It's change. Alex: And when we wonder why it has to suck so much sometimes, has to hurt so bad. The thing we gotta try to remember is that it can turn on a dime. Izzie: That's how you stay alive. When it hurts so much you can't breathe, that's how you survive. Derek: By remembering that one day, somehow, impossibly, you won't feel this way. It won't hurt this much. Bailey: Grief comes in its own time for everyone, in its own way. Owen: So the best we can do, the best anyone can do, is try for honesty. Meredith: The really crappy thing, the very worst part of grief is that you can't control it. Arizona: The best we can do is try to let ourselves feel it when it comes. Callie: And let it go when we can. Meredith: The very worst part is that the minute you think you're past it, it starts all over again. Cristina: And always, every time, it takes your breath away. Meredith: There are five stages of grief. They look different on all of us, but there are always five. Alex: Denial. Derek: Anger. Bailey: Bargaining. Lexie: Depression. Richard: Acceptance.

The dictionary defines grief as keen mental suffering or distress over affliction or loss; sharp sorrow; painful regret. As surgeons, as scientists, we're taught to learn from and rely on books, on definitions, on definitives. But in life, strict definitions rarely apply. In life, grief can look like a lot of things that bear little resemblance to sharp sorrow.